Contact Us
Have a question, found an error, or want to suggest a feature? We'd love to hear from you.
Who Operates This Site
CardOptimizer is built and maintained by Isaac Baek, a software engineer based in San Jose, California. This is an independent project. CardOptimizer is not affiliated with, endorsed by, or sponsored by any credit card issuer, bank, or financial institution.
Report Incorrect Data or Rules
Accuracy is the foundation of this tool. If you notice incorrect card information, an outdated offer, or an eligibility rule that does not match a known issuer policy, please report it. Include the card name, the expected behavior, and any supporting documentation (such as a link to issuer terms) so we can verify and correct the issue.
Confirmed data errors are typically corrected within 1-3 business days.
Open an issue on GitHubFeature Suggestions
Have an idea for a new feature or improvement? We welcome suggestions that help people make more informed credit card decisions.
Suggest a featureGeneral Inquiries
For general questions, partnerships, or reporting issues not suited for GitHub, you can contact us directly via email. This inbox is actively monitored and we typically respond within 1-2 business days.
[email protected]Response Expectations
- -Data error reports: Acknowledged within 24 hours. Corrections published within 1-3 business days after verification.
- -Feature suggestions: Reviewed and triaged within one week.
- -General inquiries: Response within 1-2 business days.
Note: CardOptimizer is an independent educational tool and is not affiliated with any credit card issuer. We cannot assist with specific application decisions, account issues, or disputes. For those, please contact your card issuer directly. This tool does not provide financial advice.
You might also find answers on our How It Works page, which explains all eligibility rules in detail.
For details on our methodology, data sources, and independence policy, see our Trust Center.